Welcome to 1300 Cassia Street, a brick-front colonial tucked on a quiet cul-de-sac in Herndon. Set on a private lot backing to lush trees and parkland, with a fenced backyard and access to a nearby walking trail, this home offers a great combination of space, privacy, and setting. Inside, you'll find generously sized rooms throughout, with hardwood floors on the main level (refinished in 2019) and a layout that flows easily between the living room, dining room, kitchen, and family room. The kitchen was renovated in 2011 and features new cabinets, Silestone countertops, an extended center island with seating, updated BOSCH appliances, and two pantries for added storage. It opens to the family room, creating a comfortable, connected space. Just off the garage, a redesigned mudroom (2018) adds everyday functionality with improved organization and storage. The main-level half bath was also updated in 2018. Upstairs features four well-sized bedrooms, including a spacious primary suite with a renovated bath (2016), along with an updated hall bath (2016). Fresh paint throughout much of the home in 2025-including walls, ceilings, and trim-gives it a clean, updated feel. The walk-out lower level offers excellent additional space, including a guest room and full bath, recreation room, dedicated gym area, and generous storage, with access to the backyard. An amazing screened-in porch and deck overlook the backyard, creating a great setup for outdoor living and entertaining. The backyard itself features a patio, firepit area, and playhouse, all set against a private, tree-lined backdrop. Major updates include: roof (2022), HVAC (2016), hot water heater (2019), siding and gutters with guards (2018) Conveniently located near schools, major commuting routes, and shopping and dining in downtown Herndon and Reston Town Center.